CVE-2021-38370
In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS.
02 Description
In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.55% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 74.9% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-10 00:00Z5 YR AGO
- Last updated
- 2024-08-04 01:37Z2 YR AGO
- Reserved
- 2021-08-10
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
- Data version
- 5.1
- Document digest
- 35cfdf655d7375dce4e611e0c3a5c064c100cac295dfb01b33c1ae23c5d82be2
05 Affected products
06 References
- nostarttls.secvuln.infohttps://nostarttls.secvuln.info
- alpine.x10host.comhttps://alpine.x10host.com
- bugs.gentoo.orghttps://bugs.gentoo.org/807613#c4
- security.gentoo.orgGLSA-202301-07https://security.gentoo.org/glsa/202301-07
07 Fixed in
Debian 12
- alpine Fixed in 2.25+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- alpine Fixed in 2.25+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- alpine Fixed in 2.25+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- alpine Fixed in 2.20+dfsg1-2ubuntu0.1~esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- alpine Fixed in 2.21+dfsg1-1ubuntu0.1~esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- alpine Fixed in 2.22+dfsg1-1ubuntu0.1~esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.